EDIT
Answer: B 4
Explanation: A stanza is a group of lines or a verse. There is no set number of lines that a stanza has to have. Learn more about stanzas here:
https://examples.yourdictionary.com/stanza-examples.html
ORIGINAL ANSWER WRONG: (see comments)
Answer: A 3
Explanation:
In poetry, a stanza is a group of 4 lines.
Answer:
every one lays eggs. No bird gives birth to live young. Birds quickly form and lay an egg covered in a protective shell that is then incubated outside the body.
Birds developed much great mobility than a mammal, but at the cost of being unable to carry its growing offspring about in its body. Unlike, say, a dog carrying a litter of puppies.
Explanation: